CVE-2026-59691

HIGHPre-NVD 7.17.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-07-09. The CNA's CVSS baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 4 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit pixels. This type mismatch causes an out-of-bounds heap write that can lead to denial of service (process crash) and potential memory corruption.

CVSS v3
7.1
EG Score
7.1HIGHmedium confidence
EG Risk
32
EG Risk 32/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity71% × 45%
The EG Score, 7.1 of 10.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 9, 2026

Last Modified

September 10, 2026

Advisory Details (4)

Auto-updated Jul 9, 2026
Patch available. Sources: redhat.
Web page

GStreamer / gstreamer · GitLab

https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5173
Web page

Sign in · GitLab

https://gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/100
Red Hat

2497343 – (CVE-2026-59691) CVE-2026-59691 gstreamer: gstreamer: rfbsrc/librfb Hextile heap out-of-bounds write with 16bpp framebuffer

https://bugzilla.redhat.com/show_bug.cgi?id=2497343
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-59691

Vendor Advisories for CVE-2026-59691(10)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(12)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatgstreamer-plugins-bad-free-0:0.10.23-26.el7_92026-09-02redhat
redhatgstreamer1-plugins-bad-free-0:1.16.1-4.el8_4.42026-08-19redhat
redhatgstreamer1-plugins-bad-free-0:1.18.4-9.el9_2.52026-08-19redhat
redhatgstreamer1-plugins-bad-free-0:1.10.4-7.el7_92026-08-14redhat
redhatgstreamer1-plugins-bad-free-0:1.16.1-4.el8_6.42026-08-13redhat
redhatgstreamer1-plugins-bad-free-0:1.16.1-4.el8_8.42026-08-13redhat
redhatgstreamer1-plugins-bad-free-0:1.22.1-6.el9_4.62026-08-13redhat
redhatgstreamer1-plugins-bad-free-0:1.22.12-5.el9_6.62026-08-13redhat
redhatgstreamer1-plugins-bad-free-0:1.24.11-3.el10_0.62026-08-13redhat
redhatgstreamer1-plugins-bad-free-0:1.22.12-7.el9_8.32026-08-03redhat
redhatgstreamer1-plugins-bad-free-0:1.16.1-9.el8_10.12026-07-30redhat
redhatgstreamer1-plugins-bad-free-0:1.26.7-2.el10_2.62026-07-28redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-bad1.01.18.4-3 ... 1.29.2-2 (110 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-bad1.01.22.0-4 ... 1.29.2-2 (97 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-bad1.01.26.10-1 ... 1.29.2-2 (41 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-bad1.01.26.10-1 ... 1.28.4-1 (30 versions)
  • every version up to 1.28.5-1: fixed in 1.28.5-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 14× in last 7d / 46× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 352 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 252 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  2. 2026-10-13 15:52 UTCEG score recompute
  3. 2026-10-13 15:52 UTCVendor advisory
  4. 2026-10-13 15:52 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  5. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  6. 2026-10-12 15:52 UTCEG score recompute
  7. 2026-10-11 19:36 UTCEG score recompute
  8. 2026-10-11 16:51 UTCEG score recompute
  9. 2026-10-11 14:13 UTCEG score recompute
  10. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  13. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  15. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  16. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  17. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  18. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  19. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  20. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  21. 2026-10-01 16:04 UTCEG score recompute
  22. 2026-10-01 16:04 UTCVendor advisory
  23. 2026-10-01 16:04 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  24. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  25. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.6% · 46th percentile
Show 75 more
  1. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-09-28 10:59 UTCEG score recompute
  3. 2026-09-28 10:59 UTCVendor advisory
  4. 2026-09-28 10:59 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  5. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  6. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  7. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  8. 2026-09-24 11:41 UTCVendor advisory
  9. 2026-09-24 11:41 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  10. 2026-09-23 06:00 UTCEG score recompute
  11. 2026-09-23 06:00 UTCVendor advisory
  12. 2026-09-23 06:00 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  13. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  14. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  15. 2026-09-18 05:37 UTCEG score recompute
  16. 2026-09-18 05:37 UTCVendor advisory
  17. 2026-09-18 05:37 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  18. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  19. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  20. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  21. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  22. 2026-09-14 11:13 UTCVendor advisory
  23. 2026-09-14 11:13 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  24. 2026-09-13 23:47 UTCEG score recompute
  25. 2026-09-13 23:47 UTCVendor advisory
  26. 2026-09-13 23:47 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  27. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  28. 2026-09-13 08:20 UTCEG score recompute
  29. 2026-09-13 08:20 UTCVendor advisory
  30. 2026-09-13 08:20 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  31. 2026-09-12 14:43 UTCVendor advisory
  32. 2026-09-12 14:43 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  33. 2026-09-12 03:25 UTCEG score recompute
  34. 2026-09-12 03:25 UTCVendor advisory
  35. 2026-09-12 03:25 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  36. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  37. 2026-09-10 14:50 UTCEG score recompute
  38. 2026-09-10 14:50 UTCVendor advisory
  39. 2026-09-10 14:50 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  40. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  41. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  42. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  43. 2026-09-06 14:00 UTCEG score recompute
  44. 2026-09-06 14:00 UTCVendor advisory
  45. 2026-09-06 14:00 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  46. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  47. 2026-09-05 22:36 UTCEG score recompute
  48. 2026-09-05 22:36 UTCVendor advisory
  49. 2026-09-05 22:36 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  50. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  51. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  52. 2026-09-02 09:19 UTCEG score recompute
  53. 2026-09-02 09:19 UTCVendor advisory
  54. 2026-09-02 09:19 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  55. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  56. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  57. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  58. 2026-08-30 18:15 UTCVendor advisory
  59. 2026-08-30 18:15 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  60. 2026-08-30 06:57 UTCEG score recompute
  61. 2026-08-30 06:57 UTCVendor advisory
  62. 2026-08-30 06:57 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  63. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  64. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  65. 2026-08-27 21:47 UTCEG score recompute
  66. 2026-08-27 21:47 UTCVendor advisory
  67. 2026-08-27 21:47 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  68. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  69. 2026-08-27 01:12 UTCEG score recompute
  70. 2026-08-27 01:12 UTCVendor advisory
  71. 2026-08-27 01:12 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1
  72. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  73. 2026-08-26 03:55 UTCEG score recompute
  74. 2026-08-26 03:55 UTCVendor advisory
  75. 2026-08-26 03:55 UTCGHSA enrichmentGHSA-g4ff-54hw-hj6r · GitHub severity HIGH · GitHub CVSS 7.1

Related CVEs(same product + same vendor + same CWE)

Same vendor

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redhat:RHSA-2026:47179

Frequently asked(5)

What is CVE-2026-59691?
CVE-2026-59691 is a high-severity vulnerability; its CVE record was published on July 9, 2026. A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit…
When was CVE-2026-59691 made public?
CVE-2026-59691 was made public on July 8, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on July 9, 2026. EchelonGraph's copy of the record carries a last-modified date of September 10, 2026; the record at its source may have been updated since.
Is CVE-2026-59691 actively exploited?
CVE-2026-59691 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59691?
CVE-2026-59691 has a CVSS base score of 7.1 (the CNA's own assessment, by redhat; NVD's own analysis pending).
How do I remediate CVE-2026-59691?
A fix for CVE-2026-59691 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-59691 are linked in the Vendor Advisories panel on this page.

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